N.I. t;-2 >:,{<. 



Capillary Electrometers. Electrodes. 



947 



62 242. 1 : 5. 



62241. 1:9. 



62 246. 4 : 3. 



62 249. 1 : 9. 



62 244. 1 : 6. 



62 250. 1 : 6. 



<;_'. iM.'i. 2 Concentration Cells after Grimsehl, on one stand (Grimsehl, Fig. 863) 



lii',i'44. Electrolytic Stand t'ur Rotating Platinum Electrode, Figure; price, including 



motor and gearing, but excluding electrodes 



The one electrode is kept continually in motion by a 110 220 volt electric motor with cord and 

 grin-ing: the elertrolytic processes are therefore not appreciably accelerated. We supply platinum 

 electrodes and platinum dishes at as low a price possible, according to weight and with the addition 

 of the* charges for shaping. 



(52,245. - - i d e m, with larger motor so as to enable the apparatus to be used as a Stirrer also 



62,24(i. Flat Electrode, F i g u r e, for Laboratory experiments, with platinum sheet having 

 ;i surface of 15x20 mm 



This electrode consists of a rectangular piece of the thinnest platinum foil welded on to two 

 i'orksli;i|ii'd stiff platinum wires sealed in a glass tube; connection is made by a copper cord in the in- 

 terior of the small glass tube. 



62.247. - - idem, area 20x30 mm 



62.248. idem; area 30x40 mm 



<;_..! J!. Stand for above Platinum Electrodes, Figure. Price without Electrodes . . . . 



The rods on the insulating stand, for clamping the electrodes, can be adjusted both vertically 



:ui<l laterally. 



62,250. Apparatus for demonstrating Nobili's Colour Rings, F i g u i e (M. P., 9 th Edn., Ill, 

 p. 576), with platinum electrode 



s. d. 

 0. 18. 



4. 10. 



5. 10. 

 0. 3. 



0. 3.6 



0. 4.0 



1. 2.0 



0. 14. 



Cl. 5987, 2562, 

 2082, 3228, 



5974, 

 5965. 60 * 



